Match the column :
Column-I | Column-II | ||
(a) | ZnS crystal | (p) | fcc |
(b) | CaF2 crystal | (q) | hcp |
(c) | NaCl crystal | (r) | Distance between closest particles is a. |
(d) | Diamond crystal | (s) Only one type of voids are occupied |
Text Solution
Verified by ExpertsA
(A - p,q,r,s); (B - p,r,s); (C - p,s); (D - p,r,s)
Sol. ZnS crystal 
S 2– ion are present in fcc lattice & Zn 2+ ion occupy all the tetrahedral voids distance of tetrahedral voids from corner = 
CaF 2 → Fluorite structure
Ca 2+ ion are present in ccp lattice & F – ion are present in all tetrahedral voids.
NaCl → Rock salt Type structure
Cl – ion are present in ccp lattice & Na + ion occupy all the octahedral voids.
Diamond crystal → C atom present in fcc lattice in which alternate tetrahedral voids are occupied by C atom.
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